SOLUTION: The 14 digits of a credit card are written in the boxes shown. If the sum of any three consecutive digits is 16, what is the value of A? A _ 4 _ _ _ _ _ _ _ _ 4

SOLUTION: The 14 digits of a credit card are written in the boxes shown. If the sum of any three consecutive digits is 16, what is the value of A? A _ 4 _ _ _ _ _ _ _ _ 4 _ 9

Question 974848: The 14 digits of a credit card are written in the boxes shown. If the sum of any three consecutive digits is 16, what is the value of A? A _ 4 _ _ _ _ _ _ _ _ 4 _ 9
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!

Look at the very end where you have 4 _ 9. The digit between them has to be 3, because the digits 4, blank, and 9 are consecutive and therefore must sum to 16. Now that you know that value, you have _ 4 3 9. So, since _ 4 3 must sum to 16, what must that blank be? And so on until you figure out what the blank in position two has to be...

John

My calculator said it, I believe it, that settles it

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